Technical Reference Guide: HP Compaq 8100 Elite Series Business Desktop Computers

Technical Reference Guide www.hp.com 5-9
Input/Output Interfaces
5.6 Universal Serial Bus Interface
The Universal Serial Bus (USB) interface provides asynchronous/isochronous data transfers with
compatible peripherals such as keyboards, printers, or modems. This high-speed interface
supports hot-plugging of compatible devices, making possible system configuration changes
without powering down or even rebooting systems.
These systems provide ten externally-accessible USB ports; four front panel USB ports (which
may be disabled) and six USB ports on the rear panel. In addition, these systems support a media
reader accessory that uses two USB ports through a system board header connection. The USB
2.0 controller provides a maximum transfer rate of 480 Mb/s. Table 5-5 shows the mapping of
the USB ports.
USB
Table 5-5.
PCH USB Port Mapping
USB Signals USB Connector Location (all form factors
Data 0P, 0N System board header P151
Data 1P, 1N System board header P151
Data 2P, 2N System board header P150
Data 3P, 3N System board header P150
Data 4P, 4N Front panel
Data 5P, 5N Front panel
Data 6P, 6N Front panel
Data 7P, 7N Front panel
Data 8P, 8N Rear panel, quad
Data 9P, 9N Rear panel, quad
Data 10P, 10N Rear panel, quad
Data 11P, 11N Rear panel, quad
D a t a 12 P, 12N Re a r p a n e l , d u a l
Data 13P, 13N Rear panel, dual